Kemija - 2010./11. ljeto - 11.

$[\mathrm{A}\mathrm{r}]3{\mathrm{s}}^2[\backslash mathrm\{Ar\}]\; ~3\; \backslash mathrm\{s\}^\{2\}$

$[\mathrm{N}\mathrm{e}]3{\mathrm{s}}^2[\backslash mathrm\{Ne\}]\; ~3\; \backslash mathrm\{s\}^\{2\}$

$[\mathrm{A}\mathrm{r}][\backslash mathrm\{Ar\}]$

$[\mathrm{N}\mathrm{e}][\backslash mathrm\{Ne\}]$